Accumulated Other Comprehensive Income/(Loss) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Accumulated other comprehensive income/(loss), beginning balance			$ (72,252,000)	$ 6,089,000
Other comprehensive income/(loss) before reclassifications			(8,489,000)	5,367,000
Amounts reclassified from accumulated other comprehensive income/(loss), net of tax			(852,000)	(474,000)
Current period change	$ 43,663,000	$ 8,030,000	(9,341,000)	4,893,000
Accumulated other comprehensive income/(loss), ending balance	(81,593,000)	10,982,000	(81,593,000)	10,982,000
Foreign Currency Translation Adjustment [Member]
Accumulated other comprehensive income/(loss), beginning balance			(70,746,000)	(14,687,000)
Other comprehensive income/(loss) before reclassifications			(5,843,000)	18,177,000
Amounts reclassified from accumulated other comprehensive income/(loss), net of tax			0	0
Current period change			(5,843,000)	18,177,000
Accumulated other comprehensive income/(loss), ending balance	(76,589,000)	3,490,000	(76,589,000)	3,490,000
Defined Benefit Plans [Member]
Accumulated other comprehensive income/(loss), beginning balance			1,405,000	214,000
Other comprehensive income/(loss) before reclassifications			0	0
Amounts reclassified from accumulated other comprehensive income/(loss), net of tax			106,000	135,000
Current period change			106,000	135,000
Accumulated other comprehensive income/(loss), ending balance	1,511,000	349,000	1,511,000	349,000
Net Unrealized Gain/(Loss) on Cash Flow Hedges [Member]
Accumulated other comprehensive income/(loss), beginning balance			(2,911,000)	20,562,000
Other comprehensive income/(loss) before reclassifications			(2,646,000)	(12,810,000)
Amounts reclassified from accumulated other comprehensive income/(loss), net of tax			(958,000)	(609,000)
Current period change			(3,604,000)	(13,419,000)
Accumulated other comprehensive income/(loss), ending balance	$ (6,515,000)	$ 7,143,000	(6,515,000)	7,143,000
Tax provision on amounts reclassified from AOCI for defined benefit plans			(60,000)	(76,000)
Tax benefit on amounts reclassified from AOCI for cash flow hedges			$ 638,000	$ 406,000